Doxepin is a tricyclic antidepressant. Therapeutic drug levels are monitored to assist the physician assessing therapeutic response and avoid toxicity.
Collect at steady-state trough concentration. Specimen should be
collected >12 hrs after dose. Do not use gel barrier/Serum
Separator tubes. ACD tube is unacceptable.
Reported (Analytical Time)
The CPT codes provided are based on AMA guidelines and are for informational purposes only.
CPT coding is the sole responsibility of the billing party.
Please direct any questions regarding coding to the payer being billed.
Transport Temperature: Room temperature Methodology: Chromatography/Mass Spectrometry Reject Criteria: Gel barrier/Serum Separator tubes; Gross hemolysis